Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan yang » dan yang, yin yang
kang minh » kang minah, sang minh, anh minh
minh song » minh cong, jin song, min hong
li lu » li ju, li l, li li
li wu » l wu, yi wu, li ju
shin » skin, sein, thin

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yidan yang ((li lu) or (li wu)) kang minh song shin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yidan yang ((li lu) OR (li wu)) kang minh song shin ;.
• Adding a wildcard symbol may retrieve word variants: wang yidan yang ((li lu) or (li wu)) kang minh song shin ;*.